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i too debated between ppi and slay, and ultimately went with slay since i've heard ppi can be too much, and i felt slay adequately prepared me plus he (or she?) was responsive to questions i posted on the slay forum you get access to once signing up, i bought the answers to the practice test...

You will need minimum 4 years under a PE, they will validate this. It also does not have to be your 'boss', it can be a co-worker who can vouch for you. In my case I used 2 people, and had one on standby if needed.

I am having the same problem as the OP. I do see what you're saying Slay but given the reference material in the manual, it can be misleading. When would you use the BHP equation at the bottom? What is the difference between WHP and BHP, as explained for this problem? Also given that it...

gotta bump this, been looking all over the web for this, this is now #19 in the current ncees practice exam, i had no idea the reheat process line was horizontal, this was the only thing i was caught up on, absolutely no mention in the solution, so kudos to slay for this help, also ncees hvac...

Here is the solution explained. Not sure how I even found this, or that I completely agree with it.

Question: HVAC system at 5000 ft designed for 23 tons sensible and 3 tons latent OA is 95 db, 75 wb Room air is 75 db, 45 rh supply air temp is 55 f Find supply air flow rate Answer: The solution uses the sensible heat gain eqn q = C Q delta T, at 5000 ft elevation (and q only at 23 tons)...

How was the reference manual? I mean is it pdf or some other type program? For example in pdf, if I search chill, Adobe will ask if I want to search just for chill, and will exclude other words such as chiller. That can be useful. Were there pages that you had to rotate? I noticed the...

Thanks for the heads up, I've been using v1.3. One thing I noticed in v1.5 that drives me absolutely nuts is they have pages that should be in landscape, in portrait format, like the steam tables. Makes no sense, v1.3 was great as it had all pages rotated correctly.

Forgive me if I'm not allowed to ask, but has anyone actually had to use SHR ratio for the HVAC exam? This is something I've just learned about, plus trying to come up with some way to use it on the exam seems rather odd. And this is only for the slope on the psychrometric chart I'm referring...